Bug 2513019

Summary: CVE-2026-19389 gstreamer1-plugins-ugly-free: gstreamer: integer overflow/underflow in asfdemux bounds checks leading to out-of-bounds read [fedora-all]
Product: [Fedora] Fedora Reporter: Ganesh <gnaik>
Component: gstreamer1-plugins-ugly-freeAssignee: Yaakov Selkowitz <yselkowi>
Status: CLOSED CURRENTRELEASE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: high    
Version: 45CC: dominik, gwync, multimedia-sig, wtaymans, yselkowi
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["6c337ae5-99f4-43ec-9194-f9dd91e3c01a"]}
Fixed In Version: Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-08-19 15:47:13 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2513016    

Description Ganesh 2026-08-10 03:01:53 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

A flaw was found in GStreamer gst-plugins-ugly (asfdemux). The ASF demuxer performed arithmetic on attacker-controlled length and size fields from ASF/WMV/WMA headers using 32-bit unsigned operations without adequate overflow and underflow checks. In gst_asf_demux_process_metadata(), summing name_len and data_len could wrap, bypassing the available-data check and causing g_convert() to read beyond the heap buffer during UTF-16LE to UTF-8 conversion. Related underflow issues in other header parsers similarly produced oversized lengths and out-of-bounds reads. Because asfdemux is auto-plugged by playbin and decodebin, processing a crafted file can crash the application (denial of service) and may enable limited heap information disclosure via metadata handling. Fixed upstream in gst-plugins-ugly 1.28.6 (GStreamer-SA-2026-0075).
Comment 1 Aoife Moloney 2026-08-17 15:50:04 UTC 
This bug appears to have been reported against 'rawhide' during the Fedora Linux 45 development cycle.
Changing version to 45.